I am 28 year old male who is into weightlifting and resistance training. I was looking for a potent pre-workout supplement to boost my training regimen and has been suggested Nitraflex by GAT (German-American Technologies). While this product has been described as a "dietary supplement" apparently by some "fitness experts" I necessarily don't agree with them since Nitraflex claims to be a Testosterone enhancer/booster. As mentioned on the product itself. I have no problems with the caffeine content but I am pretty apprehensive about consuming any sort of hormone booster/enhancer from a long-term point of view. While I have been told by many that Nitraflex is safe to consume, can I please have some reliable suggestions and advice on the subject? Is it safe to consume hormone booster/enhancer as a pre-workout supplement? The product does not come cheap though but I am not going by the price tag as well. My only concern is the body's natural mechanism of testosterone production should not get messed up. N.B:- For a trial, I consumed half scoop of Nitraflex in around 8 ounce (1 glass) of water just once. I am unable to state if my workout was pretty pumped up that day but I lifted much heavier weights and was quite explosive with the moves during my 90 minutes of stay in the gym. I am, however, not taking it as the potency of Nitraflex and considering it more as a "psychological boost" Thank you.